城市群客运网络动态分配策略应急疏散仿真

Simulation of Emergency Evacuation under Dynamic Distribution Strategy of Passenger Transport Network in Urban Agglomeration

研究负载分配策略有助于引导客流在面对突发事件时的有序疏散,降低突发事件对交通网络的破坏程度和影响范围。本文构建了城市群综合客运网络模型,对网络级联失效现象进行研究,提出了基于局部负载率的流量分配策略。使用MATSim仿真软件,研究呼包鄂榆城市群不同疏散策略下客流疏散和网络稳定情况。结果表明:城市群综合客运网络中突发事件对某一节点的破坏会对其他节点客流造成影响;基于局部负载率的动态分配策略能降低级联失效的发生强度与传播范围。

Research of load distribution strategy is helpful to guide the orderly evacuation of passenger flow in the face of emergencies and reduce the damage degree and influence range of emergencies to the transportation network.An urban agglomeration comprehensive passenger transport network model is constructed,the cascading failure phenomenon of the network is studied,the traffic transmission and state judgment criteria are summarized,and the traffic allocation strategy based on local load rate is proposed.MATSim simulation software is used to study passenger flow evacuation and network stability under different evacuation strategies in Hu-Bao-Er-Yu Urban Agglomeration.The results show that the damage of one node caused by an emergency will affect the passenger flow of other nodes.Road transportation can quickly evacuate the gathering passenger flow brought by abnormal events.The dynamic distribution strategy based on local load ratio can reduce the occurrence intensity and propagation range of cascading failure.